Orientation-Induced Effects of Water Harvesting on Humps-on-Strings of Bioinspired Fibers

被引:21
作者
Chen, Yuan [1 ]
Li, Dan [1 ]
Wang, Ting [1 ]
Zheng, Yongmei [1 ]
机构
[1] Beihang Univ, Sch Chem & Environm, Key Lab Bioinspired Smart Interfacial Sci & Techn, Minist Educ, Beijing 100191, Peoples R China
来源
SCIENTIFIC REPORTS | 2016年 / 6卷
基金
中国国家自然科学基金; 国家教育部博士点专项基金资助;
关键词
FOG COLLECTION; SURFACES; CAPTURE; DROPS; TRANSPORT; DROPLETS; ADHESION;
D O I
10.1038/srep19978
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Smart water-collecting functions are naturally endowed on biological surfaces with unique wettable microstructures, e.g., beetle back with "alternate hydrophobic, hydrophilic micro-regions", and spider silk with wet-rebuilt "spindle-knot, joint" structures. Enlightened by the creature features, design of bio-inspired surfaces becomes the active issue in need of human beings for fresh water resource. Recently, as observed from spider web in nature, the net of spider silk is usually set in different situations and slopes in air, thus spider silks can be placed in all kinds of orientations as capturing water. Here, we show the styles and orientations of hump-on-string to control the ability of water collection as bioinspired silks are fabricated successfully. As different strings, sizes (height, length, pitch) of humps can become the controlling on volumes of extreme water drops. It is related to the different solid/liquid contact regions resulting in the as-modulated wet adhesion due to orientations of humps-on-strings. The conversion of high-low adhesion can be achieved to rely on orientations for the effect of capturing water drops. These studies offer an insight into enhancement of water collection efficiency and are helpful to design smart materials for controlled water drop capture and release via conversions of high-low adhesion.
引用
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页数:7
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共 36 条
[1]   Performance of activated carbon loaded fibrous filters on simultaneous removal of particulate and gaseous pollutants [J].
Agranovski, IE ;
Moustafa, S ;
Braddock, RD .
ENVIRONMENTAL TECHNOLOGY, 2005, 26 (07) :757-766
[2]   Large-Scale Fabrication of Bioinspired Fibers for Directional Water Collection [J].
Bai, Hao ;
Sun, Ruize ;
Ju, Jie ;
Yao, Xi ;
Zheng, Yongmei ;
Jiang, Lei .
SMALL, 2011, 7 (24) :3429-3433
[3]   Direction Controlled Driving of Tiny Water Drops on Bioinspired Artificial Spider Silks [J].
Bai, Hao ;
Tian, Xuelin ;
Zheng, Yongmei ;
Ju, Jie ;
Zhao, Yong ;
Jiang, Lei .
ADVANCED MATERIALS, 2010, 22 (48) :5521-5525
[4]   Purity of the sacred lotus, or escape from contamination in biological surfaces [J].
Barthlott, W ;
Neinhuis, C .
PLANTA, 1997, 202 (01) :1-8
[5]   Formation of beads-on-a-string structures during break-up of viscoelastic filaments [J].
Bhat, Pradeep P. ;
Appathurai, Santosh ;
Harris, Michael T. ;
Pasquali, Matteo ;
McKinley, Gareth H. ;
Basaran, Osman A. .
NATURE PHYSICS, 2010, 6 (08) :625-631
[6]   Biomimetics: lessons from nature - an overview [J].
Bhushan, Bharat .
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2009, 367 (1893) :1445-1486
[7]   HOW TO MAKE WATER RUN UPHILL [J].
CHAUDHURY, MK ;
WHITESIDES, GM .
SCIENCE, 1992, 256 (5063) :1539-1541
[8]   Bioinspired tilt-angle fabricated structure gradient fibers: micro-drops fast transport in a long-distance [J].
Chen, Yuan ;
Wang, Lin ;
Xue, Yan ;
Jiang, Lei ;
Zheng, Yongmei .
SCIENTIFIC REPORTS, 2013, 3
[9]   Bioinspired spindle-knotted fibers with a strong water-collecting ability from a humid environment [J].
Chen, Yuan ;
Wang, Lin ;
Xue, Yan ;
Zheng, Yongmei ;
Jiang, Lei .
SOFT MATTER, 2012, 8 (45) :11450-11454
[10]   The beads-on-string structure of viscoelastic threads [J].
Clasen, C ;
Eggers, J ;
Fontelos, MA ;
Li, J ;
McKinley, GH .
JOURNAL OF FLUID MECHANICS, 2006, 556 :283-308